Sewing-machine



(No Model.) 6 Sheets-Sheet 1.

W. Y. OBER. SEWING MACHINE.

No. 471,017. Patented Mar. 15, 1892.

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6Sheets-Sheet 2. W. Y. OBER.

SEWING MACHINE. No. 471,017.

Patented Mar. 15, 1892.

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WITNESSES W. Y. OBER.

SEWING MACHINE.

6 Sheets-Sheet 3.

Patented Mar. 15, 1892.

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SEWING MACHINE.

- No.471,017.' Patented Mar. 15,1892.

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No. 471,017. Patented Mar. 15,1892.

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W. OBER.

SEWING MACHINE. No. 471,017. Patented Mar. 15, 1892.

\/\/lT E5555 STATES ITE IVILLIAM Y. OBER, OF LYNN, MASSACHUSETTS, ASSIGNOR TO THE BOSTON I/VELT MACHINE COMPANY, OF PORTLAND MAINE.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 471,017, dated March 15, 1892.

' Application filed July 13, 1891.

To all whom it may concern:

Be it known that I, WILLIAM Y. OBER, a citizen of the United States, and a resident of Lynn, in the county of Essex and State of Massachusetts, have invented new and useful Improvements in WVelt-Sewing Machines, of which the following, taken in connection with the accompanying drawings, is a specification.

This invention relates to improvements in welt-sewing machines; and it is carried out as follows, reference being had to the accompanying drawings, wherein Figure 1 represents a side elevation of the complete machine, showing the needle and thread-guide in position during the first part of the stroke. Fig. 2 represents a partial side elevation showing the needle and thread-guide in position immediately following the looping or carrying of the thread through the hookneedle. Fig. 3 represents a plan of the machine with the parts in the same position as in Fig. l, with the waxing device removed. Fig. i represents a front elevation of the machine, showing the parts in the same position as in Fig. 1. Fig. 5 represents a vertical section on the line X X, shown in Fig. 3. Fig. 6

represents a vertical section on the line Y Y,

shown in Fig. 3. Fig.7 represents a perspective view of the head, showing the feed mechanism in an opposite position to that shown in Fig. 3. Fig.8 represents a detail front elevation of the head, showing the needle in its extreme leftv position. Fig. 9 represents a cross-section on the line Z Z in Fig. 6, show ing the cam for operating the thread-guide and feed of the needle. Fig. 10 represents a detail sectional view of the needle and cast-off blocks. Fig. 11 is a side view of the upper end of the head of the machine, showing the channeled insole as being sewed to the shoe-upper without a welt; and Fig. 12 represents a similar view showing a welt-guide for sewing a welt to the upper and channeled insole.

Similar letters refer to similar parts wherever they occur on the different parts of the drawings. v

In carrying out this invention I make use of the following essential parts, namely: first, an open-eyed curved needle having at its extremity a sharp-pointed end that serves as an Serial No. 399,307. (No model.)

awl for the purpose of penetrating the work and carrying the thread through it during the operation of sewing, the work being fed by the reciprocating movement of this needle, to which is also imparted a rocking movement for the purpose of penetrating the work and carrying the thread through the work in forming the loops and stitches; second, a cast-off sfs and a spring; fourth, a stationary curved channel guide adapted to be inserted in the channel of the insole during the operation of the machine, and, fifth, a laterally=movable work-support, against which the shoe is held and guided by the operator during the process of sewing the upper to the insole or the welt to the same.

The invention'consists in the features of construction and the combination or arrangement of devices hereinafter described and claimed.

Arepresents the upper portion of the standard or post to which the head B is secured, Figs. 1, 2, 3, 4, 5, and 6.

c c are bearings secured to the standard A,

in which the driving-shaft O is journaled. O

is a cord or belt pulley secured to the shaft 0, by means of which a rotary motion is impartedto said shaft from .a belt or cord and driving-pulley, as usual.

O is a balance-wheel secured to theend'of; 5'

the shaft O.

. The mechanism for imparting an oscillating movement to the needle is constructed as follows: On the driving-shaft O is secured an eccentric block D, surrounded by a strap or ring D, to which is pivoted at (Z the link D",

the upper end of which is pivoted to a block D which is adjustably connected to the needle-carrier D the latter being journaled on a pin or bolt E, secured to the upper end of r00 the feed-carrying arm F. D is the curved open-eyed needle secured in a suitable manner to the said needle-carrier.

The mechanism for imparting a feed motion to the needle is constructed as follows: The needle-carrying arm F is provided at its lower end with a vertical cylindrical spindle or shank F, journalcd in a bearing in the head B, as shown in Fig. 6, and to the lower end of the spindle or shank is secured a rearwardly-projecting lever F having a pin or pin and roll F which is actuated in one direction by a face-cam F secured to the shaft 0, as shown in Figs. 1, 3, 4, and 6, and in an opposite direction by means of a spring F one end of which is attached to the lever F and the other end to a stationary portion of the machine, as shown in Figs. 1, 3, and G. The throw of the lever F is regulated by means of an adjusting screw F, screwed through the standardA and having its inner end adapted to serve as a stop against the lever F", as shown in Fig. 3, and by this means the desired amount of feed of the needle is regulated.

The mechanism for operating the cast-01f from the needle-carrier is constructed as follows: On the same pivot-pin or bolt E on which the needle carrier is journaled is loosely mounted the east-otf block G, which is held in frictional contact with the pivot-pin or bolt by means of a set-screw G, screwed through the block G and having its inner end held in frictional contactwith the pin or bolt E, as shown in Fig. 10.

Gis the cast-elf, through which the needle D passes, said east-ofi being secured in a suitable manner to the cast-off block G. On the side of the needle-carrier D" is a lateral pin or projection D, working in a segmental or curved slot G in the side of the cast-01f block G, as shown in Figs. 1, 2, and 10, and by this arrangement an intermittent rocking movementis imparted to the cast-off by the direct action of the needle-carrier, thereby materially simplifying the operative mechanism.

The mechanism for operating the threadguide is constructed as follows: On the shaft (3 is secured a grooved cam II, by means of which a lengthwise movement is imparted to the thread-guide lever II, said lever having at its lower end a side projection or pin and roll ll", projecting into the groove H in the cam H, as shown in Figs. 6 and 9. The lever 11' is guided in a forked bearing II, secured to the head of the machine, as shown in Figs. 3 and 6.

II is the perforated thread-guide secured in a suitable manner to the upper end of the lever H, as shown in Figs. 1, 2, 3, 4, 6, 7, and S. The lateral or side motion of the threadguide is imparted to it by a depression H in the bottom of the cam-groove H and a spring H pressing against the lower portion of the thread-guide lever II, as shown in Figs. and G. ll is a stationary support for the lower end of the lever ll.

needle for the formation of a loop, which is drawn through said perforated work-support and the work held against it during the operation of the machine.

In Fig. 1, L is the wax-pot, as usual, through which the thread M is guided on its way to the thread-guide. In connection with the machine any well-known tension and take-up de vice may be used withoutdeparting from the essence of my invention.

In Figs. 11 and 12, N represents the wooden last, 0 the channeled insole, and P the upper lasted upon the last, as usual.

In Fig. 12 the work-support K has a lateral perforation adapted to receive and guide the welt R while being stitched on,as is usual in devices of this kind.

The operation of the machine is as follows: For welt-sewing the welt is placed in its guide and the lasted shoe, having the channeled insole, as described, is held by the operator in position so that the shoe-upper rests against the work-support, Fig. 12, and the bottom of the channel in the insole against the lower end of the stationary presser-foot or channelguide, after which the machine is set in operation, causing a single chain-stitch to be made through the bottom of the channel of the insole, the upper, and the welt, the chain of the stitch being laid in the bottom of the channel, and during such operation the needle enters and perforates the insole, upper, and welt, then feeds by moving sidewise, and during such feed motion of the needle the thread-guide lays a loop in the barb of the needle, after which the needle draws the loop of the thread through the work and returns with said loop to its original position, and so on during the operation of sewing the welt to the upper and insole. The cast-elf co-operates with the needle to form a chain-stitch in the ordinary manner. IV hen it is desired to use the machine for sewing turned shoes, in which case no welt is used, the operation is similar, but the welt-guide and welt are omitted, as shown in Fig. 11.

IV hat I wish to secure by Letters Patent and claim is- 1. The combination of a laterally-movable arm having a pin or bolt, a. needle-carrier and a cast-01f, both mounted on the pin or bolt and having a pin-and-slot connection at their inner sides, so that the needle-carrier operates directly on the cast-off to oscillate the same, an adj ustablc friction device connecting the cast-01f by frictional contact with the said pin or bolt, mechanism for moving the said arm laterally, and means for oscillating the needle-carrier, substantially as described.

2. 'In a welt-sewing machine, the combination, with a head, of a movable arm F, having a pin or bolt E, a needle-carrier and a cast-off oscillating on the pin or bolt and having a pinand-slot connection between their inner sides, a set-screw passing through a part of the castoif for holding the latter in frictional contact with the pin or bolt, and means for oscillating the needle-carrier, substantially as described.

In testimony whereof I have signed my name to this specification, in the presence of 15 two subscribing witnesses, on this 5th day of June, A. D. 1891.

WILLIAM Y. OBER.

Witnesses:

ALBAN ANDREN, CHARLES E. BRooKs. 

